- Comments:
Thayer’s Gulls breed in small colonies on coastal cliffs on arctic islands.
They are most likely to be confused with Herring and Iceland gulls. Adults have a yellow
bill with a red spot and sometimes a green base. Eye color is usually dark, but may appear
yellow under some lighting conditions. A reddish-purple eye ring is present during the
breeding season. The outer primaries show a distinct black with white pattern.
- Thayer's Gulls
occur in small numbers or are found only in localized sites within the Great Plains.
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